The Reduced Pressure Detector Assembly (RPDA) is an outgrowth of the Double Check Detector Assembly and is typically only used on fire line applications. However, this assembly is intended to protect the potable water supply from fire sprinkler systems that contain chemical additives or can be connected to an auxiliary non-potable water source. This assembly is comprised of a mainline reduced pressure backflow assembly equipped with OS&Y gate valves, a bypass arrangement containing a smaller reduced pressure backflow assembly and water meter. The RPDA must be installed at least 12" above finished grade or the 100 year flood plain which ever is greater.

No diagram available at this time.

What is the CRD?

The CRD is a local government that delivers 200+ local, regional and sub-regional services for residents of the region, including 13 municipalities and three electoral areas on southern Vancouver Island and the Gulf Islands. Governed by a 24 member Board of Directors, the CRD is working to serve the public, and build a vibrant, livable and sustainable region.